Using the D’Addario Auto Lock Guitar Strap is easy. First, find the strap buttons on your guitar. Then, press the spring - loaded latch on the strap and place it over the strap button. The latch will automatically clamp down. When you want to remove the strap, just press the latch again. As for maintenance, keep it clean by using a soft, dry cloth to wipe it down regularly. Avoid exposing it to extreme heat or moisture as this could damage the strap. Make sure to check the latch regularly to ensure it's working properly. And always store it in a dry place when not in use.